Appendicitis has a wide differential diagnosis including gastro-intestinal, gynaecological and urological causes. Differential diagnoses are shown below:
| Gastro-intestinal | Gynaecological | Urological |
|---|---|---|
| Terminal ileitis | Ruptured ovarian cyst | Renal colic |
| Mesenteric adenitis | Ectopic pregnancy | Urinary tract infection |
| Meckel’s diverticulitis | Pelvic inflammatory disease | Pyelonephritis |
| Diverticulitis | Ovarian torsion | |
| Acute cholecystitis | ||
| Gastroenteritis | ||
| Bowel obstruction | ||
| Non-specific abdominal pain |